How to determine the cause of abnormal parameters during boiler operation

From the questions you asked, you can see that you are a novice, or even a novice, from your follow-up questions, it is more certain!

If you want to learn to master boiler accident analysis, you must first learn the principles of boiler systems, and then you must be familiar with the internal structure of boilers.

Take the steam pressure you asked, there are too many factors that affect the steam pressure, such as boiler bursting, fuel interruption, and even subsequent equipment steam changes, etc., the steam temperature and pressure of the boiler in operation is not fixed, it is always changing, it is normal to change, if it is an abnormal change, it is necessary to discuss the cause of the occurrence, generally speaking, the boiler is abnormal, and its accident phenomenon will not be only one, such as water wall burst: once the water wall bursts, the feed water flow will inevitably gradually increase. The negative pressure of the furnace will inevitably decrease, and the temperature of the furnace near the burst pipe will inevitably decrease. The analysis of the cause of the accident should be affirmed from many aspects, and some accident phenomena have something in common, such as the water wall burst pipe and the superheater burst pipe, which will reduce the vapor pressure.

More often than not, we have to think about why this accident happened, and it will happen in this part of the equipment, how to avoid it or reduce the frequency of it, if you don't analyze this, then it is very likely that it will happen here next time.

The skill level of the boiler is reflected in the accident analysis to determine, a shutdown of the furnace to the company's loss is not small, the boiler is basically stopped by the whole plant, it cannot be said that the bed temperature suddenly becomes low to say that the water wall burst pipe, it may also be that the calorific value of the fuel has become low.

I hope it can help you, and I welcome my fellow boilers.

This question is too general, first find out what went wrong, and then analyze it according to the likelihood of the problem.

You give the specific parameters first, and then we can help you analyze the reason.

Summary. 1 How to control the temperature difference of the steam drum during the boiler start-up within the specified range? 1. The inlet water temperature before ignition should not be too high, and the speed should not be too fast, and it should be implemented according to the regulations.

2. After the water inlet is completed, the bottom steam can be put into heating when conditions permit. 3. Strictly control the boost speed, especially 0. The rate of heating is not greater than.

4. After the above operation, the temperature difference between the upper and lower parts of the steam drum can not be effectively controlled, and the pressure boost should be suspended when it is close to or reaches 40, and the sewage should be discharged regularly to increase the water circulation, and the pressure should be boosted when the temperature difference is stable and less than 40. 2 How to deal with the power interruption of thermal instrumentation? 1. Switch each automatic to manual.

2. The load of the unit should be kept stable as much as possible, and the local water level gauge and pressure gauge should be monitored at the same time, and the relevant parameter values of the steam turbine should be referred to to strengthen the operation analysis, and the operation should not be operated blindly. 3. The power supply should be restored quickly, and if it cannot be restored for a long time or the means of control are lost, the furnace should be stopped. 3 What are the principles for handling crew accidents?

1. Take measures to quickly contact direct threats to personal and equipment safety. 2. Avoid subjective and one-sided judgment and operation, and should be reflected upward as soon as possible and dealt with in a timely manner.

1 How to control the temperature difference of the steam drum during the boiler start-up within the specified range? 1. The temperature of the inlet water before ignition should not be too high, and the speed should not be too fast, and it should be implemented according to the regulations. 2. After the water inlet is completed, the bottom steam can be put into heating when conditions permit.

3. Strictly control the boost speed, especially 0. The rate of heating is not greater than. 4. After the above operation, the temperature difference between the upper and lower parts of the steam drum can not be effectively controlled, and the pressure boost should be suspended when it is close to or reaches 40, and the sewage should be discharged regularly to increase the water circulation, and the pressure should be boosted when the temperature difference is stable and less than 40.

2 How to deal with the interruption of the old power supply of thermal instrumentation? 1. Switch each automatic to manual. 2. The load of the unit should be kept stable as much as possible, and the local water level gauge and pressure gauge should be monitored at the same time, and the relevant parameter values of the steam turbine should be referred to to strengthen the operation analysis, and the operation should not be operated blindly.

3. The power supply should be restored quickly, and if it cannot be restored for a long time or the means of control are lost, the furnace should be stopped. 3 What are the principles for handling crew accidents? 1. Take measures to quickly contact direct threats to personal and equipment safety.

2. Avoid subjective and one-sided judgment and operation, and should be reflected upward as soon as possible and dealt with in a timely manner.

Give me useful points.

I wrote on the graduation **.

Why should the boiler be shut down urgently when the boiler is seriously flushed and full of water? 1. When there is a serious shortage of water in the reform hall, if the furnace is not stopped urgently, the water-cooled wall will be overheated, and in serious cases, it will cause a large-scale explosion of the water-cooled wall, resulting in the serious consequences of being forced to stop the furnace. 2. When the water is seriously full, it will cause a large amount of steam to carry water, the quality of steam deteriorates, and the salt content of steam increases.

3. If the steam with water enters the steam turbine, it will cause the axial thrust of the steam turbine to increase, damage the thrust pad, and at the same time, it will also make the steam turbine blades bear a large impact force, and in serious cases, the steam turbine blades will be broken.